Motorcycle frame



FIG. 1 is a perspective view of a motorcycle frame embodying the design of the present invention.

FIG. 2 is a front elevational view of the motorcycle frame illustrated in FIG. 1.

FIG. 3 is a right side elevational view of the motorcycle frame illustrated in FIG. 1.

FIG. 4 is a left side elevational view of the motorcycle frame illustrated in FIG. 1.

FIG. 5 is a back elevational view of the motorcycle frame illustrated in FIG. 1.

FIG. 6 is a top view of the motorcycle frame illustrated in FIG. 1.

FIG. 7 is a bottom view of the motorcycle frame illustrated in FIG. 1.

FIG. 8 is a perspective view of a second embodiment of a motorcycle frame embodying the design of the present invention.

FIG. 9 is a front elevational view of the motorcycle frame illustrated in FIG. 8.

FIG. 10 is a right side elevational view of the motorcycle frame illustrated in FIG. 8.

FIG. 11 is a left side elevational view of the motorcycle frame illustrated in FIG. 8.

FIG. 12 is a back elevational view of the motorcycle frame illustrated in FIG. 8.

FIG. 13 is a top view of the motorcycle frame illustrated in FIG. 8; and,

FIG. 14 is a bottom view of the motorcycle frame illustrated in FIG. 8.

The broken lines immediately adjacent the shaded areas represent the boundaries of the claimed design, while all other broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a motorcycle frame, substantially as shown and described. 